Articles

Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, believes every network engineer should understand the differences between the two major switching methods employed in computer networks. This overview discusses the two methods from their initial deployments to modern usage.

Aspiring or active IT professionals seeking certification will want to construct a personal certification plan to reflect both long- and short-term certification goals. This is a living document that you should update at least once a year to react to changes in the job market, personal and professional interests, and work opportunities and situations. In this article, Ed Tittel and Mary Kyle show you how to construct your personal certification plan.

Aspiring and active IT professionals seeking certification may benefit from understanding the many benefits that can result from earning one or more professional certification credentials. Ed Tittel and Mary Kyle take a look at several potential benefits that certification offers to IT professionals.

After becoming familiar with basic VLAN concepts, you need to learn how to configure your organization's networks and devices. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, discusses important concepts and commands you will use in setting up networks and getting devices to talk to each other.

If you have a good grasp of the basics of local access networks (LANs), it's time to step up your game. Sean Wilkins, co-author of CCNA Routing and Switching ICND2 200-101 Official Cert Guide, explores the concepts behind virtual LANs, how they differ from physical LANs, and why VLANs make sense for modern organizations.

Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, doesn't approve of blurring collision domains and broadcast domains. Though these models are often taught together, modern technology has outpaced some of the ideas, and networking specialists who are new to the field need to distinguish between current terminology and outdated concepts.

When you're working toward CompTIA Network+ certification, there is no such thing as being too prepared. Keith Barker, co-author of CompTIA Network+ N10-006 Cert Guide, discusses how to get ready for exam day. Which topics require the most focus? What are the test questions like? This profile provides the details you need, including suggestions on books to read and how to practice for the test.